WO2022222897A1

WO2022222897A1 - Atomizing core and aerosol cartridge

Info

Publication number: WO2022222897A1
Application number: PCT/CN2022/087493
Authority: WO
Inventors: 曹海英; 姜林君; 王立平; 周兴夫
Original assignee: 浙江恒芯电子有限公司
Priority date: 2021-04-19
Filing date: 2022-04-18
Publication date: 2022-10-27
Also published as: CN115211591A

Abstract

An atomizing core (930) and an aerosol cartridge (800) comprising the atomizing core (930). The atomizing core (930) comprises a capillary channel relay liquid guiding element (939) for transmitting liquid, an atomizing core liquid guiding element (932) disposed on the outer periphery of the capillary channel relay liquid guiding element (939) for receiving the liquid, and a heating body (931) for heating the atomizing core liquid guiding element (932) to atomize the liquid. The atomizing core liquid guiding element (932) is a non-woven fabric, and the capillary channel relay liquid guiding element (939) comprises a relay liquid guiding element core (9391) and at least two capillary channels (9392) axially penetrating through the relay liquid guiding element core (9391). The atomization core (930) and the aerosol cartridge (800) are suitable for atomization of various liquids, and a suitable shape, size and quantity of capillary channels can be designed according to atomization requirements of different liquids.

Description

A kind of atomizing core and aerosol bomb

technical field

The invention relates to an atomizing core and an aerosol bomb, in particular to an atomizing core and an aerosol bomb used in application fields such as electronic cigarettes and drug solution atomization.

Background technique

The technology of atomizing liquid has been widely used in fields such as electronic cigarettes. A common technique in electronic vaping is to heat the liquid-guiding element of the atomizing core that is directly connected to the e-liquid, such as glass fiber bundles or cotton fiber bundles passing through the cavity of the atomization chamber, to atomize the liquid. It is necessary to properly match the atomizing chamber cavity with the atomizing core liquid-conducting element, so that the liquid can be conducted from the atomizing core liquid-guiding element while allowing the outside air to pass through the gap between the atomizing core liquid-guiding element and the atomizing chamber cavity. into the reservoir element. Because the glass fiber bundle and cotton fiber bundle are soft and lack a fixed shape, it is difficult to precisely control the gap between the liquid-guiding element of the atomizing core and the cavity of the atomizing chamber. The oil will explode during the atomization, and the liquid will leak in severe cases. If the gap is too small, it is difficult for the air to enter the liquid storage element, which will lead to the lack of liquid in the atomization core and the paste core, which will affect the stability of the atomization and the consumption experience.

According to a known aerosol bomb with a gas-liquid channel, the gas-liquid channel includes a fluid core made of fiber bonding, the fluid core is used to conduct liquid for the atomizing core, and the fluid core is used to absorb the liquid and release to control the liquid sealing of the gas-liquid channel to control the atomization process. For example, in an equilibrium state, the fluid core absorbs enough liquid, and the liquid on the peripheral surface of the fluid core seals the gas-liquid channel. When the liquid is led out from the liquid storage element, the negative pressure in the liquid storage element increases, the liquid in the gas-liquid channel is absorbed by the fluid core, part or all of the liquid seal of the gas-liquid channel disappears, and the air in the atomizing chamber passes through the gas-liquid channel Entering the liquid storage element, when the vacuum degree in the liquid storage element is reduced to an equilibrium state, the gas-liquid channel is re-sealed by the liquid. In this technology, the liquid flow path in the fiber-bonded fluid core is tortuous and the liquid flow speed is slow, especially when the temperature is low, the viscosity of the electronic cigarette liquid whose main components are propylene glycol and glycerin is high, which is easy to cause fogging. Insufficient liquid supply to the core will affect the taste or even paste the core.

SUMMARY OF THE INVENTION

In order to solve the problems existing in the prior art, the present invention proposes an atomization core, which includes a capillary channel relay liquid-conducting element for conducting liquid, a receiving Liquid atomizing core liquid guiding element and heating atomizing core liquid guiding element to atomize liquid heating element, atomizing core liquid guiding element is non-woven fabric, capillary channel relay liquid guiding element includes relay liquid guiding element core and at least two capillary channels axially extending through the core of the relay liquid-conducting element.

Further, the capillary channel has an inner peripheral wall that can be wetted by liquid.

Further, the capillary channels are arranged in a linear or nearly linear manner along the axial direction.

Further, the maximum inscribed circle diameter of the smallest cross-section of the capillary channel is 0.1 mm to 0.8 mm.

Further, the capillary channel relay fluid-conducting element includes radially open capillary channels.

Further, the core body of the relay liquid conducting element is made of plastic or metal.

Further, in any cross section of the capillary channel, the maximum inscribed circle diameter at the top of the capillary channel is smaller than the maximum inscribed circle diameter of the capillary channel.

The present invention also provides an aerosol bomb. The aerosol bomb includes a liquid storage element, an atomization chamber cavity and the above-mentioned atomizing core, and the liquid guiding element of the atomizing core only communicates with the liquid storage element through a capillary channel relay liquid guiding element.

The atomizing core and the aerosol bomb of the present invention are suitable for the atomization of various liquids, and suitable capillary channel shapes, sizes and quantities can be designed according to the atomization requirements of different liquids. The capillary channel relay liquid-conducting element of the invention has a simple structure, can be manufactured by injection molding, extrusion and other methods, has precise dimensions, low cost and high strength, and is suitable for automatic assembly. By adopting the non-woven fabric for the liquid conducting element, the cost of the atomizing core can be greatly saved. In order to make the above-mentioned content of the present invention more obvious and easy to understand, preferred embodiments are hereinafter described in detail with reference to the accompanying drawings.

Description of drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings, and these exemplifications do not constitute limitations of the embodiments, and elements with the same reference numerals in the drawings are denoted as similar elements, Unless otherwise stated, the figures in the accompanying drawings do not constitute a scale limitation.

1a is a schematic structural diagram of an aerosol bomb with an atomizing core according to a first embodiment of the present invention;

1b-1e are various cross-sectional schematic diagrams of the capillary channel relay liquid-conducting element according to the first embodiment;

2 is a schematic structural diagram of an aerosol bomb having an atomizing core according to a second embodiment of the present invention.

Detailed ways

The embodiments of the present invention are described below by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for the purpose of this thorough and complete disclosure invention, and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings are not intended to limit the invention. In the drawings, the same elements/elements are given the same reference numerals.

Definitions in the present invention:

Capillary channel relay liquid guiding element: in the aerosol bomb, the liquid in the liquid storage element can be directly or indirectly transported to the liquid guiding element of the atomizing core through the capillary channel.

Radial closed capillary channel: Except for the two ends of the capillary channel, which are connected to the outside of the capillary channel, the radial direction of any part of the capillary channel is not connected to the outside world, such as a capillary tube.

Radial open capillary channel: The capillary channel is connected to the outside of the capillary channel except for both ends, and the radial direction of the capillary channel is connected to the outside of the capillary channel, such as a capillary groove.

Capillary channel with open ends: one or some radially closed capillary channels in the capillary channel relay liquid-conducting element have a short end and cannot contact the liquid-conducting element of the atomizing core, so as to communicate with the outside atmosphere.

The maximum inscribed circle diameter of the capillary channel cross section: the radially closed capillary channel cross section, the maximum inscribed circle is obtained according to the mathematical definition; the radially open capillary channel cross section, first use a straight line between the open points on the cross section The connection is then processed as a radially closed capillary channel cross-section to obtain the maximum inscribed circle diameter.

Maximum inscribed circle diameter at the top of the capillary channel: Connect the top two points of the radially open capillary channel cross-section with a straight line, and obtain the maximum inscribed circle diameter of the capillary channel cross-section tangent to the straight line according to the mathematical definition.

Unless otherwise specified, terms used herein, including scientific and technical terms, have the meaning as commonly understood by one of ordinary skill in the art. In addition, it is to be understood that terms defined in commonly used dictionaries should be construed as having meanings consistent with the context in the related art, and should not be construed as idealized or overly formal meanings.

first embodiment

1a is a schematic structural diagram of an aerosol bomb with an atomizing core according to the first embodiment of the present invention; FIGS. 1b-1e are schematic cross-sectional views of various capillary channel relay liquid-conducting elements according to the first embodiment.

As shown in FIGS. 1 a to 1 e , the atomizing core 930 according to the first embodiment of the present invention includes a capillary channel relay liquid-conducting element 939 for conducting liquid, and a liquid-receiving liquid disposed on the outer periphery of the capillary channel relay liquid-conducting element 939 The atomizing core liquid guiding element 932 and the heating element 931 for heating the atomizing core liquid guiding element 932 to atomize the liquid, the atomizing core liquid guiding element 932 is a non-woven fabric, and the capillary channel relay liquid guiding element 939 includes a relay conductor. The liquid element core 9391 and at least two capillary channels 9392 axially extending through the relay liquid conducting element core 9391.

The capillary channel 9392 uses its capillary force to transport the liquid to the liquid-conducting element 932 of the atomizing core, and the capillary channel relaying the liquid-conducting element 939 has both a liquid-conducting function and an air-conducting function.

In this embodiment, as shown in Fig. 1a, the surface of the capillary channel relay liquid-conducting element 939 is covered with non-woven fabric as the atomizing core liquid-conducting element 932, and the helical heating wire is wrapped on the non-woven fabric as a heating body 931.

In the present invention, the capillary channel 9392 has an inner peripheral wall that can be wetted by liquid. Those skilled in the art can select materials, or process the inner peripheral wall of the capillary channel 9392, or coat or add to the inner peripheral wall of the capillary channel 9392. A hydrophilic material that enables the inner peripheral wall of the capillary channel 9392 to be wetted by liquid.

In the present invention, under the action of the surface tension of the liquid and the capillary force of the liquid-conducting element 932 of the atomizing core, the liquid can flow in the capillary channel 9392. The capillary channels 9392 in the capillary channel relaying liquid-conducting element 939 are arranged in a linear or almost straight line along the axial direction, that is, the capillary channel 9392 in the capillary channel relaying the liquid-conducting element 939 and the capillary channel relaying the liquid-conducting element 939 are arranged. The axial direction is parallel or substantially parallel, so that the liquid can flow in the axial direction in the capillary channel 9392 , and this structure is beneficial to reduce the resistance of liquid conduction and reduce the risk of liquid shortage of the atomizing core 930 .

As shown in FIGS. 1 b to 1 e , the capillary channel relay liquid-guiding element 939 is preferably a radially open capillary channel 9392 . The capillary channel relay liquid-conducting element 939 may also include radially closed capillary channels 9392 and radially open capillary channels 9392, in this case, the capillary channel relays the liquid-conducting element 939 and the atomizing core liquid-conducting element 932 The contact part is the radially open capillary channel 9392 .

The capillary channel relay liquid-conducting element 939 can be formed by techniques such as injection molding or extrusion using plastic or metal. Except for the capillary channel 9392 which can conduct fluid, the other parts of the capillary channel relay fluid conducting element 939 have no fluid conducting function.

The size of the capillary channel 9392 in the capillary channel relay liquid guiding element 939 is represented by the maximum inscribed circle diameter of the smallest cross section in the capillary channel 9392, and the size of different capillary channels 9392 in the capillary channel relay liquid guiding element 939 can be the same or different. . The maximum inscribed circle diameter of the smallest cross-section in the capillary channel 9392 is 0.1 mm to 0.8 mm, such as 0.1 mm, 0.15 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.8 mm, preferably 0.15 mm to 0.6 mm mm, "mm" in this document all refers to millimeters. The capillary channel 9392 with smaller inscribed circle diameter has strong liquid sealing ability and is suitable for applications with low viscosity and small liquid output. The capillary channel 9392 with a larger inscribed circle diameter has a weaker liquid sealing ability and is suitable for applications with high viscosity or large liquid output. In the equilibrium state the capillary channel 9392 is liquid-sealed due to capillary force.

As shown in FIG. 1e, the capillary channel relay liquid guiding element 939 adopts a radially open capillary channel 9392. In any cross section of the capillary channel 9392, the maximum inscribed circle diameter at the top of the capillary channel 9392 is smaller than the diameter of the capillary channel 9392. Maximum inscribed circle diameter. Specifically, a plurality of radially open grooves are formed on the outer periphery of the relay liquid-conducting element core 9391 of the capillary channel relay liquid-conducting element 939, and the ends of the partition walls of the adjacent grooves are formed with a first thickness. Ends that gradually increase and then decrease, or are formed with ends of increasing thickness, such that in any cross-section of the capillary channel 9392, the maximum inscribed circle diameter at the radial ends of the capillary channel 9392 first gradually decreases and then gradually decreases. increases, or the maximum inscribed circle diameter at the radial ends of the capillary channel 9392 gradually decreases. This structure can utilize the surface tension of the capillary channel 9392 to conduct the liquid in the capillary channel 9392 to the atomizing core liquid-conducting element 932 .

As shown in FIG. 1a, according to the first embodiment of the present invention, an aerosol bomb 800 having a capillary channel relay liquid-conducting element 939, the aerosol bomb 800 includes a liquid storage element 100, an atomization chamber cavity 9342 and the above-mentioned atomization The core 930 and the atomizing core liquid-conducting element 932 communicate with the liquid-storage element 100 only through the capillary channel relay liquid-conducting element 939 .

The aerosol bomb 800 further includes an aerosol bomb housing 810 and a housing base 112 disposed at the bottom of the aerosol bomb housing 810 .

In the aerosol bomb 800 of the present invention, the liquid storage element 100 is a component that stores the liquid to be atomized. According to the purpose of the application, different liquids can be stored in it, such as e-cigarette liquid, CBD solution, drug solution, etc. The cross-section of the liquid storage element 100 may be in various shapes, such as circular, rectangular, etc., or may be a combination of various geometric shapes.

The liquid storage element 100 may have a liquid storage element through hole 130 axially extending through the liquid storage element 100 . The liquid storage element through hole 130 can be used as the aerosol channel 1303 of the aerosol bomb 800 . One end of the aerosol channel 1303 is connected to the atomizing chamber 934 , and the other end is the aerosol outlet 1301 . A condensate absorbing element (not shown) can be installed in the aerosol channel 1303 to absorb the condensate and improve the consumption experience.

The atomization part of the present invention includes an atomization chamber cavity 9342 , an atomization chamber 934 and an atomization core 930 . The atomization chamber 934 is a cavity in which the liquid is atomized, and is surrounded by the atomization chamber cavity 9342 and the housing base 112 . The atomizing core 930 is arranged in the atomizing chamber 934, the casing base 112 is provided with a casing base through-hole 1122 that penetrates the casing base 112, and the end of the casing base through-hole 1122 that communicates with the outside is used as the air inlet 1121, and the outside air The atomization chamber 934 is entered through the air inlet 1121 . The liquid is atomized by the atomizing core 930 in the atomizing chamber 934 and escapes the aerosol bomb 800 through the aerosol channel 1303 .

The atomizing core 930 further includes a wire 933, and the wire 933 is connected to the wire pin 936 or a power supply (not shown).

When the atomizing core 930 is working, the liquid on the atomizing core 930 is atomized, the aerosol escapes the aerosol bomb 800 through the aerosol channel 1303, and the liquid in the liquid storage element 100 relays the flow of the liquid guide element 939 through the capillary channel. The capillary channel 9392 is led out and supplemented to the atomizing core 930 or its periphery. As the liquid is led out, when the negative pressure in the liquid storage element 100 rises to a certain level, the capillary channel relays a certain capillary channel 9392 of the liquid conducting element 939. The air in the atomization chamber 934 enters the liquid storage element 100 through the capillary channel 9392 opened by the liquid seal, so that the negative pressure in the liquid storage element 100 is reduced, and the capillary channel 9392 opened by the liquid seal is re-sealed by the liquid seal. , this process is repeated so that the atomization process can continue until the liquid in the liquid storage element 100 is used up.

Second Embodiment

2 is a schematic structural diagram of an aerosol bomb having an atomizing core according to a second embodiment of the present invention. The structure of this embodiment is similar to that of the first embodiment, and the same parts as those of the first embodiment will not be repeated in the description of this embodiment.

As shown in FIG. 2a, the atomizing core 930 according to the first embodiment of the present invention includes a capillary channel relay liquid-conducting element 939 for conducting liquid, and a mist for receiving the liquid disposed on the outer periphery of the capillary-channel relay liquid-conducting element 939 The core liquid guiding element 932 and the heating element 931 for heating the atomizing core liquid guiding element 932 to atomize the liquid, the atomizing core liquid guiding element 932 is a non-woven fabric, and the capillary channel relay liquid guiding element 939 includes a relay liquid guiding element The core body 9391 and at least two capillary channels 9392 axially extending through the core body 9391 of the relay liquid-conducting element.

In this embodiment, the heating element 931 is a helical heating wire, and the atomizing core liquid-conducting element 932 is a non-woven fabric wound on the surface of the heating wire. The heating wire wound with the non-woven fabric is arranged on the outer periphery of the capillary channel to relay the liquid-conducting element 939 to receive the liquid.

In this embodiment, as shown in FIG. 2 , the capillary channel relay liquid guide element 939 is provided in the atomization chamber 934 , and the liquid storage element 100 and the atomization core 930 are communicated through the capillary channel relay liquid guide element 939 . Specifically, in this embodiment, the two ends of the capillary channel relay liquid guide element 939 block the through holes on both sides of the atomization chamber cavity 342, and the capillary channel relay liquid guide element 939 includes a plurality of radially open capillary channels 9392, the helical atomizing core 930 is sleeved on the capillary channel relay liquid-conducting element 939, and the atomizing core liquid-conducting element 932, that is, the non-woven fabric wound on the heating wire, is connected to the capillary channel relay liquid-conducting element 939. The outer wall is in direct contact. The capillary channel relay liquid-conducting element 939 includes at least two axially penetrating capillary channels 9392 , and the capillary channels 9392 use their capillary force to transport the liquid from the liquid storage element 100 to the atomizing core liquid-conducting element 932 . The maximum inscribed circle diameter of the smallest cross-section in the capillary channel 9392 is 0.1 mm-0.8 mm, preferably 0.15 mm-0.6 mm.

To sum up, the atomizing core and the aerosol bomb of the present invention are suitable for the atomization of various liquids, and suitable capillary channel shapes, sizes and numbers can be designed according to the atomization requirements of different liquids. The capillary channel relay liquid-conducting element of the invention has a simple structure, can be manufactured by injection molding, extrusion and other methods, has precise dimensions, low cost and high strength, and is suitable for automatic assembly. By adopting the non-woven fabric for the liquid conducting element, the cost of the atomizing core can be greatly saved.

The aerosol bomb of the present invention includes a capillary channel relay liquid-conducting element. Since the capillary channel is arranged in a straight line or almost a straight line along the axial direction, plus the capillary pulling force from the liquid-conducting element of the atomizing core communicated with the capillary channel, the liquid is transported. The resistance is small and the speed is fast, so that the atomization process can be carried out smoothly. When the liquid content in the liquid-conducting element of the atomizing core increases, the capillary force decreases, reaching a balance with the negative pressure in the liquid-storage element conducted through the capillary channel, so that the liquid content in the liquid-conducting element of the atomizing core is moderate, and the atomization Stable, reducing the risk of frying oil and liquid leakage. The aerosol bomb has a compact structure and can be widely used in various electronic cigarettes and drug atomizing devices.

In addition, the above-mentioned embodiments of the present invention merely illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical idea disclosed in the present invention should still be covered by the claims of the present invention.

Claims

An atomization core, characterized in that the atomization core comprises a capillary channel relay liquid-conducting element for conducting liquid, and an atomization receiving the liquid is arranged on the outer periphery of the capillary channel relay liquid-conducting element. A core liquid-conducting element and a heating element that heats the atomizing core liquid-conducting element to atomize the liquid, the atomizing core liquid-conducting element is non-woven fabric, and the capillary channel relay liquid-conducting element includes a relay conductor. A liquid element core and at least two capillary channels axially penetrating the relay liquid-conducting element core.
The atomizing core of claim 1, wherein the capillary channel has an inner peripheral wall that can be wetted by the liquid.
The atomizing core according to claim 1, wherein the capillary channels are arranged in a linear or almost linear arrangement along the axial direction.
The atomizing core of claim 1, wherein the maximum inscribed circle diameter of the smallest cross-section of the capillary channel is 0.1 mm to 0.8 mm.
The atomizing core of claim 1, wherein the capillary channel relay liquid-conducting element comprises a radially open capillary channel.
The atomizing core according to claim 1, wherein the core body of the relay liquid-conducting element is made of plastic or metal.
The atomizing core according to claim 1, wherein in any cross section of the capillary channel, the maximum inscribed circle diameter at the top of the capillary channel is smaller than the maximum inscribed circle diameter of the capillary channel.
An aerosol bomb, characterized in that the aerosol bomb comprises a liquid storage element, an atomization chamber cavity and the atomization core according to any one of claims 1 to 7, the atomization core conducting liquid The element communicates with the liquid storage element only through the capillary channel relay liquid conducting element.